CN210559018U

CN210559018U - Balanced heavy fixing device and hoist

Info

Publication number: CN210559018U
Application number: CN201921233161.XU
Authority: CN
Inventors: 张巍巍; 赵庆利; 李波; 张建斐
Original assignee: Xuzhou Heavy Machinery Co Ltd
Current assignee: Xuzhou Heavy Machinery Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-19
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a counterweight fixing device and a crane, which comprises a fixed counterweight, wherein the fixed counterweight comprises a counterweight block and an ear plate component, the ear plate component is connected with the top surface of the counterweight block, the ear plate component comprises a first ear plate group and a second ear plate group, the first ear plate group and the second ear plate group are mutually vertical, and the ear plates in the first ear plate group and the second ear plate group have the same structure; the pin shaft comprises a limiting part and a connecting part, the size of the connecting part is smaller than that of a connecting hole in an ear plate in the ear plate assembly, and the size of the limiting part is larger than that of the connecting hole in the ear plate assembly; the ear plates in the first ear plate assembly and the second ear plate assembly penetrate through connecting holes in the connecting bottom plate, and the connecting part of the pin shaft penetrates through a through hole in the ear plate to fix the fixed balance weight; the connecting part of the pin is inserted into the connecting hole on the lug plate, so that the fixed balance weight is fixed. The fixing structure has simple structure and saves the time for disassembling and assembling the fixed counterweight.

Description

Balanced heavy fixing device and hoist

Technical Field

The utility model relates to an engineering machine tool technical field, concretely relates to balanced heavy fixing device and hoist.

Background

When the hoisting machine lifts a heavy object, the heavy object can generate an overturning moment on the hoisting machine. In order to prevent the hoisting machine from overturning, a counterweight is usually arranged on the other side of the boom of the hoisting machine.

At present, because of the limitation of the total weight of the running state of the whole machine, the crane can not carry all the counterweight blocks, so the commonly used counterweight block is a combined counterweight block. The combined counterweight includes a fixed counterweight (a counterweight directly connected to the hoisting machine) and a non-fixed counterweight (a counterweight other than the fixed counterweight). In the combined counterweight, the fixed counterweight is usually fixed to the turntable tail frame by using a long bolt. When long bolts are used for fixing, bolt holes in the balance weight are not easy to align with holes in a bottom plate of a tail frame of the crane, the process consumes time and labor, parts needed by the method are more, 1 long bolt, 2 nuts and 2 gaskets need to be installed on each hole site, the installation and disassembly processes are inconvenient, and the efficiency is low. Therefore, there is a need for an easily removable counterweight fixing device that facilitates, secures, and efficiently secures the counterweight during its installation and removal.

Disclosure of Invention

An object of the utility model is to provide a balanced heavy fixing device and hoist to the installation of the fixed balanced heavy that leads to among the solution prior art and the dismantlement process are inconvenient, the problem of inefficiency.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

a counterweight fixing device comprises a fixed counterweight, wherein the fixed counterweight comprises a counterweight block and an ear plate assembly, the ear plate assembly is connected to the top surface of the counterweight block, the ear plate assembly comprises a first ear plate group and a second ear plate group, the first ear plate group and the second ear plate group are perpendicular to each other, and the ear plates in the first ear plate group and the second ear plate group are identical in structure; the pin shaft comprises a limiting part and a connecting part, the size of the connecting part is smaller than that of a connecting through hole in an ear plate in the ear plate assembly, and the size of the limiting part is larger than that of the connecting through hole in the ear plate assembly; and the lug plates in the first lug plate assembly and the second lug plate assembly penetrate through connecting holes in the connecting bottom plate, and the connecting part of the pin shaft penetrates through a connecting through hole in the lug plate to fix the fixed counterweight.

Furthermore, a pin shaft hole is formed in the connecting portion of the pin shaft. The device also comprises a spring pin which is detachably connected in the pin shaft hole.

Furthermore, one side surface of the pin shaft is an arc surface, the other side surface of the pin shaft is a rectangular surface, and the rectangular surface of the pin shaft faces the connecting base plate.

Furthermore, the ear plate component and the balancing weight are manufactured in an integrated manner.

Further, the first ear plate assembly comprises a first ear plate and a second ear plate, and the center line of the connecting through hole in the first ear plate is superposed with the center line of the connecting through hole in the second ear plate; the second otic placode subassembly includes third otic placode and fourth otic placode, the central line of connect the through-hole on the third otic placode with connect the coincidence of through-hole's central line on the fourth otic placode.

Furthermore, the device also comprises a plurality of non-fixed balancing weights which are fixedly connected to the bottom surface of the fixed balancing weight.

The utility model also provides a hoist, the hoist has used foretell balanced heavy fixing device.

Further, the crane comprises a turntable tail frame, and the turntable tail frame comprises the connecting bottom plate.

The utility model has the advantages that:

1. the connecting part of the pin shaft is inserted into the connecting through hole on the lug plate, so that the fixed counterweight is fixed. The fixing structure has simple structure, saves the time for disassembling and assembling the fixed balance weight, and greatly improves the working efficiency; and the two groups of mutually vertical ear plate groups are stressed uniformly, reliably and efficiently.

2. The contact surface of round pin axle and connection bottom plate is the plane, and this kind of structure will fix the even distribution of weight of balanced weight to the contact surface of round pin axle, has increased the area of contact of atress, reduces stress concentration, has improved the holistic stability of device.

Drawings

FIG. 1 is a schematic view of a fixed counterweight according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a fixed counterweight according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a pin shaft according to an embodiment of the present invention;

fig. 4 is a schematic connection diagram of a fixture for a turntable tail frame counterweight according to an embodiment of the present invention.

Wherein: 1. fixing a balance weight; 11. a balancing weight; 2. a non-stationary counterweight; 3. a turntable tail frame; 4. connecting the bottom plate; 5. a pin shaft; 51. a limiting part; 52. a connecting portion; 53. a pin shaft hole; 61. a first ear plate set; 62. a second ear plate set; 6a, ear plates; 7. and a spring pin.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 and 2, a counterweight fixing device comprises a fixed counterweight 1 and a pin 5, wherein the fixed counterweight 1 comprises a counterweight 11 and an ear plate assembly, the ear plate assembly is connected to the top surface of the counterweight 11, the ear plate assembly comprises a first ear plate group 61 and a second ear plate group 62, the first ear plate group 61 and the second ear plate group 62 are perpendicular to each other, and ear plates 6a in the first ear plate group 61 and the second ear plate group 62 are identical in structure; the pin shaft 5 comprises a limiting part 51 and a connecting part 52, the size of the connecting part 52 is smaller than that of a connecting through hole on the lug plate 6a in the lug plate component, and the size of the limiting part 51 is larger than that of the connecting through hole on the lug plate 6a in the lug plate component; the fixed balance weight 1 is fixed by inserting the lug plate 6a of the first lug plate unit 61 and the second lug plate unit 62 through the connecting through hole of the connecting base plate 4, and inserting the connecting portion 52 of the pin 5 through the connecting through hole of the lug plate 6 a.

The hoist work needs to fix the counter weight earlier, and the counter weight is fixed including fixed counter weight 1's fixed, and the fixed of fixed counter weight 1 of this scheme can be carried out according to following operation. Provide fixed balanced heavy 1 earlier, fixed balanced heavy 1's shape can be selected according to the shape of hoist installation department, and fixed balanced heavy in this scheme includes balancing weight 11, and the similar cuboid form of balancing weight 11's shape is mainly convenient for install the hoist. The first and second

ear plate sets

61 and 62 on the weight 11 are perpendicular to each other. Specifically, the first ear plate group 61 is connected and fixed at the rear end of the top surface of the counterweight block 11, the second ear plate group 62 is connected and fixed at the front end of the top surface of the counterweight block 11, and the connection of the through holes on the ear plates 6a in the first ear plate group 61 and the ear plates 6a in the second ear plate group 62 are mutually perpendicular. The two sets of lug plate sets are vertically designed, so that the force applied by the crane can be uniformly transmitted to the lug plate sets, the front stress and the rear stress and the lateral stress are more uniform, and the strength, the rigidity and the stability of the connection of the lug plates are ensured.

When the device is used for fixing the fixed counterweight, the connecting bottom plate 4 of the crane is directly inserted into the lug plate 6 a. Specifically, two groups of connecting holes are formed in the connecting bottom plate 4, and the two groups of connecting holes are respectively matched with the first lug plate group 61 and the second lug plate group 62. The ear plate 6a in the first ear plate group 61 and the ear plate 6a in the second ear plate group 62 are respectively inserted into the connecting holes on the connecting base plate 4, the connecting part of the pin 5 is inserted into the connecting through hole on the ear plate 6a, and the fixing of the fixed balance weight is realized. The fixing structure is simple in structure, time for disassembling and installing the fixed counterweight is saved, and the fixing structure is even in stress, reliable and efficient.

In a further embodiment, the connecting portion 52 of the pin 5 is provided with a pin hole 53. After the connecting portion of the pin 5 is inserted into the connecting through hole of the lug 6a, the pin 5 is fixed by inserting a device such as a plug into the pin hole 53, so that the axial movement of the pin 5 is restricted, and the pin 5 is prevented from being separated from the connecting through hole of the lug 6 a. The stability of the system is ensured, and the safety and the stability of the system can be still ensured when the system generates great vibration. Further, installed in the pin shaft hole 53 may be a spring pin 7, and the spring pin 7 is detachably coupled in the pin shaft hole 53. The spring pin can be purchased directly, and the safety performance is higher.

In a further embodiment, one side surface of the pin 5 is a circular arc surface, and the other side surface is a rectangular surface, and the rectangular surface of the pin 5 faces the connecting bottom plate 4. Specifically, the pin 5 is a cylindrical pin in an unconventional case, and the outer peripheral surface of the pin 5 is in a shape of a combination of an arc-shaped curved surface and a rectangular surface, as shown in fig. 3. When in use, the lug plate 6a passes through the connecting hole on the connecting bottom plate 4, and the shaft pin 5 is inserted into the connecting through hole on the lug plate 6 a. At this time, it should be noted that the rectangular face of the shaft pin 5 is faced to and in contact with the connection base plate 4. Compared with the conventional pin shaft, the pin shaft 5 changes the line contact into the surface contact, and improves the stability of the device. Specifically, the contact surface of the pin shaft 5 and the connecting bottom plate 4 is a plane, the weight of the fixed counterweight 1 is uniformly distributed on the contact surface of the pin shaft 5 by the structure, the stressed contact area is increased, stress concentration is reduced, and the overall stability of the device is improved.

In a further embodiment, the ear plate assembly and the weight 11 are cast as one piece. Adopt casting integrated into one piece, can guarantee on the one hand that otic placode subassembly and balancing weight 11 are connected fixed stability, on the other hand can arrange the otic placode subassembly to corresponding position according to the position of connecting the connecting hole on the connecting bottom plate 4, is convenient for fix the fixed fixing of balanced heavy 1.

In a further embodiment, the first ear plate assembly 61 comprises two ear plates 6a, respectively denoted as first ear plate and second ear plate, the center line of the connecting through hole in the first ear plate and the center line of the connecting through hole in the second ear plate being coincident. The second ear plate assembly 62 comprises two ear plates 6a, which are respectively denoted as a third ear plate and a fourth ear plate, and the center line of the connecting through hole in the third ear plate coincides with the center line of the connecting through hole in the fourth ear plate. The design is simple and easy to assemble.

In a further embodiment, as shown in fig. 4, there are also several non-fixed counterweights 2, the number of non-fixed counterweights 2 being calculated from the weight required by the crane, and the weight of the non-fixed counterweights 2 may vary. The non-fixed counterweight 2 is fixedly connected to the bottom surface of the fixed counterweight 1 during installation.

As shown in fig. 4, the utility model also provides a crane, including the balanced heavy fixing device that any above-mentioned embodiment provided, the crane still includes revolving stage tail frame 3, and revolving stage tail frame 3 is including connecting bottom plate 4. The turntable tail frame is a common structure in a crane, and the turntable tail frame 3 in the embodiment is a common and conventional frame, and is not further described. The connecting base plate 4 is the one mentioned in the above example, and it is sufficient to be able to fix the fixed counterweight.

In the description of the present invention, it should be understood that the terms "first", "second", etc. are used to define the components, and are only used for the convenience of distinguishing the components, and if not stated otherwise, the terms have no special meaning, and therefore, should not be interpreted as limiting the scope of the present invention.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. A counterweight holding device, comprising:

the fixed counterweight comprises a counterweight block and an ear plate assembly, the ear plate assembly is connected to the top surface of the counterweight block, the ear plate assembly comprises a first ear plate group and a second ear plate group, the first ear plate group and the second ear plate group are perpendicular to each other, and the ear plates in the first ear plate group and the second ear plate group have the same structure;

the pin shaft comprises a limiting part and a connecting part, the size of the connecting part is smaller than that of a connecting through hole in an ear plate in the ear plate assembly, and the size of the limiting part is larger than that of the connecting through hole in the ear plate assembly;

and enabling the lug plates in the first lug plate group and the second lug plate group to penetrate through connecting holes in a connecting base plate, enabling the connecting part of the pin shaft to penetrate through connecting through holes in the lug plates, and fixing the fixed counterweight.

2. The counterweight fixing apparatus as claimed in claim 1, wherein said connecting portion of said pin shaft is provided with a pin shaft hole.

3. The counterweight holding assembly of claim 2 further comprising a spring pin removably attached within said pin opening.

4. The counterweight holding apparatus as claimed in claim 1, wherein one side surface of said pin is a circular arc surface, and the other side surface thereof is a rectangular surface, and said rectangular surface of said pin faces said connecting base plate.

5. The counterweight holding apparatus of claim 1 wherein said ear plate assembly and said counterweight are integrally formed.

6. The counterweight holding apparatus according to claim 1, wherein said first lug plate group includes a first lug plate and a second lug plate, and a center line of said connecting through hole of said first lug plate and a center line of said connecting through hole of said second lug plate coincide with each other.

7. The counterweight holding apparatus according to claim 1, wherein said second lug plate group includes a third lug plate and a fourth lug plate, and a center line of said connecting through hole in said third lug plate and a center line of said connecting through hole in said fourth lug plate coincide with each other.

8. The counterweight holding apparatus of claim 1 further comprising a plurality of non-holding counterweights fixedly attached to a bottom surface of said holding counterweight.

9. A crane, comprising the counterweight holding apparatus according to any one of claims 1 to 8.

10. The crane of claim 9, comprising a turret tail frame including the connecting bedplate.